Why so many "anti-feminists" in the atheist community?

[Dystopia]

Yes, because a 1-line entry in an online dictionary encapsulates all of feminism, right? Anyway, you are inaccurate: the believe in the equality of women is SUFFICIENT to term someone a feminist. It is not, however, required, as there are other definitions.

Saying you can be a feminist without believing in equality is like saying you can be an atheist and believe in god. Do you actually realize the irrationality of your postulates?

Your refusal to accept that a 1-line summary definition in an online dictionary, ignoring both the etymology and the historical usage of the word, is insufficient to represent all of feminism, doesn't change the fact that many people are using the word differently than you do and that these differences are important in understanding why some atheists seem "anti-feminist."

The fact that some atheists are using the word atheism as synonym to anti-theism doesn't make atheism = anti-theism, and by the same logic feminazis using the word feminism to describe their ideology doesn't equate feminism with misandry - Feminism is diverse and feminists hold many political views, however the view of equality for all genders is the minimum requirement you can ask for. It's not only the read of 1 online dictionary which is, btw, accurate in this case, but it's because I've been in touch with feminist people in real life, because I've read articles, blogs, opinions of famous people like Emma Watson or Daniel Radcliffe who identify as feminists and so on that brings it into the direction of defining feminist as gender equality - The rest like different political ideas is up to each person to decide.

]"Doctrinal definition" means dogma. And the fact that many atheists have an aversion to dogma explains why many atheists seem "anti-feminist."

Sorry, in my language it means something defined by a person who studied, researched, acted and has knowledge on the subject - I.E. by sociologists or actual equity feminists. The fact atheists have no dogma is a good reason to support groups that fight for equality and nothing else.